The Siemens SENTRON 5SL4632-6 is a 3P+N miniature circuit breaker rated 32 A with a B tripping characteristic, designed for 400 V AC multi-phase operation and a 10 kA breaking capacity per both EN 60898 and IEC 60947-2. It occupies 4 modular width units on a DIN rail, making it a direct fit for residential and infrastructure distribution boards where overcurrent and short-circuit protection of final circuits is required.
B curve and breaking capacity — what they mean for the panel
The B characteristic means the magnetic trip operates at 3–5× In, so a 32 A breaker trips instantaneously between 96 A and 160 A. That suits resistive and lighting loads with low inrush — think heating circuits, general socket outlets, or control transformers. The 10 kA SCCR at 400 V is the interrupting rating: it can safely clear a fault up to 10,000 A without welding contacts or cascading failure upstream. Both standards are certified, so the rating holds for IEC and UKCA jurisdictions alike.
Panel fit and integration
At 72 mm wide (4 MWUs) and 76 mm deep, it snaps onto standard 35 mm DIN rail. The IP20 rating with connected conductors means it is protected against finger contact once wired — standard for enclosed distribution boards. Sealable terminals allow the installer to lock the cover screws after commissioning, preventing tamper. Halogen-free and silicon-free construction matters for environments sensitive to outgassing — clean rooms, data centers, or medical-grade panels.
Power loss per pole is 2.7 W at rated current in hot operating state, so the 3P+N unit dissipates roughly 10.8 W total. In a densely populated enclosure, that heat adds up — account for it in the thermal budget. Mechanical service life is 10,000 operating cycles typical, adequate for normal switching duty but not for frequent on-off cycling as a disconnect.